Put DOI not Exeley (now seems to be Sciendo) publisher links in refs

README.md

@@ -12,12 +12,12 @@ The code for counting geodesic cycles uses the Waffles machine learning library
 
 ## References
 
-Martin, J. L. 2017. "The structure of node and edge generation in a delusional social network". Journal of Social Structure, 18(1):1–21. https://www.exeley.com/journal_of_social_structure/doi/10.21307/joss-2018-005
+Martin, J. L. 2017. "The structure of node and edge generation in a delusional social network". Journal of Social Structure, 18(1):1–21. https://doi.org/10.21307/joss-2018-005
 
-Martin, J. L. 2020. "Comment on Geodesic Cycle Length Distributions in Delusional and Other Social Networks". Journal of Social Structure, 21(1):77-93. https://www.exeley.com/journal_of_social_structure/doi/10.21307/joss-2020-003
+Martin, J. L. 2020. "Comment on Geodesic Cycle Length Distributions in Delusional and Other Social Networks". Journal of Social Structure, 21(1):77-93. https://doi.org/10.21307/joss-2020-003
 
 Stivala, A. 2019. "The hollow ring of randomness: Large worlds in small data". Fourth Annual Australian Social Network Analysis Conference (ASNAC 2019), November 28-29, 2019, Adelaide, South Australia. https://stivalaa.github.io/AcademicWebsite/slides/geodesic_cycles_slides.pdf
 
-Stivala, A. 2020. "Geodesic cycle length distributions in delusional and other social networks". Journal of Social Structure, 21(1):35-76. https://www.exeley.com/journal_of_social_structure/doi/10.21307/joss-2020-002
+Stivala, A. 2020. "Geodesic cycle length distributions in delusional and other social networks". Journal of Social Structure, 21(1):35-76. https://doi.org/10.21307/joss-2020-002
 
-Stivala, A. 2020. "Reply to “Comment on Geodesic Cycle Length Distributions in Delusional and Other Social Networks”" Journal of Social Structure 21(1):94-106. https://www.exeley.com/journal_of_social_structure/doi/10.21307/joss-2020-004
+Stivala, A. 2020. "Reply to “Comment on Geodesic Cycle Length Distributions in Delusional and Other Social Networks”" Journal of Social Structure 21(1):94-106. https://doi.org/10.21307/joss-2020-004